Funding for the charging stations comes from the National Electric Vehicle Infrastructure program, with $5 billion in funds nationwide through the U.S. Departments of Transportation and Energy. This includes $76.5 million for Arizona. ADOT officials said the charging stations should be no more than 50 miles apart.
https://www.kawc.org/news/2024-08-28/adot-to-add-18-new-ev-charging-stations-including-two-on-i-8